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>Are you saying that global temperatures aren't rising? They haven't for the last 15 years, so that may be exactly what he is saying. >Is the arctic icecap no
by gd1 13y ago
>Are you saying that global temperatures aren't rising?
They haven't for the last 15 years, so that may be exactly what he is saying.
>Is the arctic icecap not rapidly getting smaller?
It is, but is the antarctic icecap not rapidly getting larger?
- anon1385 13y ago> is the antarctic icecap not rapidly getting larger? To the best of our knowledge the East Antarctic Ice Sheet is gaining mass[1] due to increased precipitation and the West Antarctic Ice Sheet is losing mass[2] due to acceleration of glaciers. I believe there is also an increase in Antarctic sea ice extent [3]. As far as I know these increases are not enough to offset the reduction in mass in the Arctic but I don't have a comparison to hand. Wait a few days and the IPCC report will probably have a decent summary. [1] https://en.wikipedia.org/wiki/East_Antarctic_Ice_Sheet#Ice_mass_changes https://en.wikipedia.org/wiki/East_Antarctic_Ice_Sheet#Ice_m... [2] http://www.realclimate.org/index.php/archives/2012/12/the-heat-is-on-in-west-antarctica/ http://www.realclimate.org/index.php/archives/2012/12/the-he... [3] http://tamino.wordpress.com/2013/03/16/antarctic-sea-ice-gain/ http://tamino.wordpress.com/2013/03/16/antarctic-sea-ice-gai...
- mcv 13y agoI don't see how they could offset reduction of mass in the arctic; they're different systems. Note that loss in sea ice doesn't lead to rising sea levels; it's land ice that matters. If Antarctica indeed has a net gain in land ice, then it would be interesting if that offsets the projected loss in glaciers on Greenland. Also relevant is to what extent it's really long term gain in land ice.
- mcv 13y ago> They haven't for the last 15 years, so that may be exactly what he is saying. I hear people claim that, but I can't find anything that backs it up. From what I can tell, average global temperature in the mid-90s was lower than today. Since about 2000, the rapid rise from before seems to slowing or halting, but it seems a bit early to say that this is a persistent change in the long term trend. The steep climb from before is undeniable. In other words, the last 15 years have still been a lot warmer than anything before.
- jellicle 13y agoAh, we have a liar. http://www.skepticalscience.com/graphics/Escalator_2012_500.gif http://www.skepticalscience.com/graphics/Escalator_2012_500....